Yeah, it's what used to be Special Mail Services, the cunts who screwed up most people's Glasto and concert tickets a couple of years back. They even got the contract to deliver people's passports!
Lots of reviews of them here:
http://www.reviewcentre.com/reviews81566.html
Also there were so many complaints that they changed their name twice. Oh, and they had their licence revoked too:
http://www.psc.gov.uk/legal-framework/public-register/special-mail-services-limited.html
But lots of ticket firms still use them, presumably because they're cheap (and then charge us customers the same price as Royal Mail Special Delivery) ...